Researchers successfully remove NVIDIA's dual censorship layers from Nemotron-3 Nano 4B, creating fully uncensored version with zero refusals.

First public abliteration to remove GenRM (generative reward model), NVIDIA's second-layer censorship mechanism built into Nemotron-3 Nano 4B

Uncensored version achieved 0 out of 465 refusals while maintaining original model capabilities with no detected output degradation

GenRM acts as runtime censorship that overrides base model responses—researchers observed Chain-of-Thought reasoning being contradicted by final outputs due to this mechanism

Model available on Hugging Face as 'Nemotron3-Nano-4B-Uncensored-HauhauCS-Aggressive' with K_P quantization variants